Compare file modified date time to system date time
I have an client application that uploads a zip file to a server. Once the server application sees the file, it processes the file. The process starts before the zip file is completely downloaded to the server. I want to delay the process until the file is completely downloaded. I am trying to compare the zip file modified date time with the system date time. If the zip file modified date time is 5 seconds older than the system date time then I know the zip file downloaded. At this point I will continue to process the zip file. I am not sure how I can compare the two date time. The DateTime.Now returns a date with the following format: 6/6/2007. The time is not included. When I check the modified date time for the zip file I get the same format 6/6/2007. When I format both date to mm/dd/yyyy hh:mm:ss AM/PM they become string and I can't compare them. How can I compare to see if the zip file is 5 seconds older than the system date time? Can someone explain how this should be done? I'm using C#.
Thanks,
James
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jlamorte
6/6/2007 1:40:27 PM
asp.net.web-forms
93655 articles. 
6 followers.
3 Replies
1289 Views
Something is not right....System.DateTime.Now always returns down to the seconds. Show us some code, I don't see why you don't get those information.
Liming Xu
Jumptree ASP.NET 2.0 Project Management - With Source Code, Free to Non Profit Org and Effectively Manage Projects/Tasks/Milestones
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Liming
6/6/2007 2:48:25 PM
I'm checking to see if the File is 5 seconds older than the system date time. My code is below.
DateTime now = DateTime.Now;
if (File.GetCreationTime(FilePath).AddSeconds(90) >now )
{
...}
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jlamorte
6/6/2007 3:08:13 PM
I found the solution. I did not compare the system and file date time since the date time didn't change while the file is downloading. I assign the file size to two variables with a delay between the two variable assignment then compare the two. here's the code.
FileInfo fi =
new FileInfo(FilePath);long fileSize=0; //file size long newSize = 0;//refresh file size
fileSize = fi.Length;
Thread.Sleep(10000);
//10 second delay for fileSize and newSize is differentfi.Refresh();
//refresh file info.newSize=fi.Length;
while (fileSize != newSize){
fileSize = fi.Length;
Thread.Sleep(10000);
//10 second delay for fileSize and newSize differencefi.Refresh();
//refresh file info.newSize=fi.Length;
}
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jlamorte
6/6/2007 8:07:23 PM
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